Results 101 to 110 of about 849,814 (251)

Bidirectional charger control strategy for low-voltage charging based on DAB circuit

open access: yes机车电传动
The dual active bridge bidirectional battery charger (DAB-BBC) is a critical device for railway trains to achieve emergency traction functionality. Single-Phase Shift (SPS) control is widely employed in DAB-BBC circuits due to its advantages such as ...
WU Liangui   +5 more
doaj  

Selection and Application of DC-link Capacitor for Mine-used 2-quadrant Frequency Converter

open access: yesGong-kuang zidonghua, 2011
Based on special characteristics of mine-used 2-quadrant frequency converter and analysis and calculation of ripple current and ripple voltage of DC-link capacitor of frequency converter, a simple and easy selection method of DC-link capacitor was ...
ZHUANG De-yu
doaj  

Accurate ESR Monitoring of a DC-Link Capacitor with Switching Ripple Voltage by a Leafony [PDF]

open access: yes
Condition monitoring helps improve the reliability of power electronic converters including their DC-link capacitors because it can predict converter failure and degradation.
Yamasoto, Takuma   +7 more
core  

OPTIMIZATION OF OUTPUT RIPPLE VOLTAGE IN 11 KW SWITCH MODE POWER SUPPLY (SMPS)

open access: yes, 2017
<p>In this paper, the analysis and design of voltage feedback loop for phase-shifted full-bridge series resonant converter are presented. The effect of input ripple of dc-dc converter at output ripple is   also presented.
Avinash Kumar
core   +1 more source

Emergent Spin Supersolids in Frustrated Quantum Materials

open access: yesAdvanced Materials, EarlyView.
This review highlights developments in the study of spin super‐solids in frustrated quantum materials. Advanced experimental characterizations and computational studies enable a comprehensive understanding of the driving mechanisms of spin super‐solidity in various layered transition‐metal compounds, bridging materials, experiments, and theory aspects.
Yixuan Huang   +2 more
wiley   +1 more source

Low ripple on-chip switched capacitor DC-DC converter remove

open access: yes, 2016
Due to the fast developing technologies of portable electronic devices, more and more sophisticated devices demanding a refined and accurate supply voltage.
Li, Ling Lu
core  

All‐Amyloid Functional Coacervates

open access: yesAdvanced Materials, EarlyView.
This study introduces an all‐amyloid interfacial complex coacervate technique that employs charge‐mediated or functionalization‐assisted complexation of oppositely charged food protein‐derived amyloid nanofibrils to engineer functional soft constructs across multiple length scales.
Seyyed Alireza Hashemi   +4 more
wiley   +1 more source

Toward Pore‐Engineered 3D‐Printed Materials for Sorption Water Harvesting, Interfacial Evaporation, and Radiative Cooling

open access: yesAdvanced Materials, EarlyView.
Water harvesting, radiative cooling, and interfacial solar evaporation are fundamentally governed by coupled heat, mass, and light transport processes. These processes are mediated by pore architecture, including pore size, connectivity, and hierarchical organization.
Dejan J. Trajkovski   +5 more
wiley   +1 more source

Study of Capacitor & Diode Aging effects on Output Ripple in Voltage Regulators and Prognostic Detection of Failure [PDF]

open access: yes
Objectives: To design and simulate a buck converter and detector circuit which can prognostically indicate the power supply failure. Failure of Aluminium Electrolytic Capacitor (AEC) is considered as the parameter causing the power supply failure.
Vijayakumar, T., Sharma K, Preethi
core   +1 more source

Dynamic Electrophoretic Assembly Coupled With Water‐Splitting‐Induced pH Control Enables Precision Ion Sieving Membranes

open access: yesAdvanced Materials, EarlyView.
A green, external‐catalyst‐free route grows defect‐free covalent organic framework membranes directly on ion‐exchange supports using an alternating electric field and in situ‐generated acid. Through a self‐regulating, self‐healing mechanism, the membranes achieve near‐complete, ultra‐fast separation of monovalent ions such as Li+, Na+, and K+, offering
Mohammad Hossein Jandaghian   +8 more
wiley   +1 more source

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